I agree completely but people will be at different stages in their proficiency. It is good that the author felt confident enough to write the blog. His skills will only improve from that.
(I'm not happy with my own English. It has deteriorated a lot since grammar school. My spoken English is worse than my written English.)
(I'm not happy with my own English. It has deteriorated a lot since grammar school. My spoken English is worse than my written English.)